1/* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18package java.beans; 19 20import java.util.EventListener; 21 22/** 23 * A PropertyChangeListener can subscribe with a event source. Whenever that 24 * source raises a PropertyChangeEvent this listener will get notified. 25 */ 26public interface PropertyChangeListener extends EventListener { 27 28 /** 29 * The source bean calls this method when an event is raised. 30 * 31 * @param event 32 * the {@link PropertyChangeEvent} object which contains the name 33 * and the old and new value of the property that has changed. 34 */ 35 public void propertyChange(PropertyChangeEvent event); 36} 37